Headphone



FIG. 1 is a lower-left-rear perspective view showing the design.

FIG. 2 is an upper-left-rear perspective view thereof.

FIG. 3 is a front view thereof.

FIG. 4 is a rear view thereof.

FIG. 5 is a left-side view thereof.

FIG. 6 is a right-side view thereof.

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines depict environment that forms no part of the claimed design. 

CLAIM We claim the ornamental design for a headphone, as shown and described. 